APS = S/Y. At break-even point, S = 0 so APS = 0 (A is correct). Below break-even, S is negative so APS is negative (C is correct). Above break-even, S is positive so APS is positive (E is correct). APS cannot be more than one since consumption cannot be zero or negative (B is wrong). APS can theoretically approach but not equal 1 in standard Keynesian analysis (D is excluded). Hence (A), (C), (E).